John b



(Model.)

J. R. GOEHRING.

INJECTOR.

Patented Jan. 3, 1888.

N. PETIRS. Phalo-ulnagnpher. washington, D.C.

' UNITED STATES PATENT l OEEICEo JOHN R. GOEHRING, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO HENRY BELFIELD AND T. BROOM BELFIELD, BOTH OF SAME PLACE.

INJ ECTOR.

PCIFIGATIOIG forming part of Letters Patent No. 375,810, dated January 3, 1888.

Application filed November 523, 1886.

.To all whom t may concern,.-

Be it known that I, JOHN It. GOEHRING, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Injectors, of which the following is a specification.

My invention relates to improvements in that class of injectors which employ two steamnozzles and two combining-tubes, and in which to the steam is admitted to the nozzles in succession, the objects of my invention being to ren der such device compact in size and to simplify the construction and operation of the steam-valve and overtiow-valve.

In the accompanying drawings, Figure l is alongitudinalsection ofaninjectorconstructed in accordance with my invention. Fig. 2 is a transverse section of the same on the line l 2; Fig. 3, a transverse section, partly in elevation, of the overflow-valve and its nut; Figs. 4, 5, and 6, side views ofparts of the injector detached from the casing, and Fig. 7 an 4end view of parts ofthe device.

A represents the casing of theinjector, which is provided with suitable threaded partitions for the reception of the rst steam-nozzle, B, the first combining-tube, D, and the second combiningtube, E, all of these being in the same axial line, as shown. The delivery-tube 3o E is in the present instance formed by the iiaring rear end of the second combining-tube, E, the first combiningtube, D, being made in sections connected by wing-pieces x, and the second stea1n-nozzle being formed by the annular 3 5 space g, intervening lbetween the rear end of the first combining-tube and the forward end of the second combining-tube.

The steam-nozzle B has a tubular barrel, G, in which are formed aseries of ports, a, and to 4o a seat at the forward end of this barrel is adapted the rim g/of the valve H, which serves to cut off the flow of steam from the steam chamber C to the nozzles, this valve having a tubular projection, H', in which are formed a series of ports, b, located close to the rim y of the valve. The tubular barrel of the steamnozzle crosses a chamber, d, formed in the casing, and this chamber communicates through the passage e with a chamber, f, whichsur- 5o rounds the rear end of the first combining-tube,

Serial No. 219.656. lModel.)

D, and communicates with the annular space g, forming the second steamnozzle. The ports a and b are so located that as the valve H is withdrawn steam will be permitted to enter the ports b before there is such a movement of the tubular projection H of the valve as to uncover any portion of the ports a; hence it will be seen that by aproper manipulation of the handle J, which is connected to the stem J of the valve, the latter may be so operated 6o as to admit steam to the rst nozzle, B, of the injector before there is any tlow of steam to the second nozzle, g, so that when the volume of water is lifted by the action of the first nozzle a further movement of the valve will un 65 cover or partly uncover the ports a and permit steam to iiow to the second nozzle, the

ports b being at` the same time thrown wide open, so as to permit the flow ofa full volume of steam to the first nozzle.

The overliow-valve K is adapted to a seat in the overflow-branch K', as usual; but as this overliowyalve is forward of the rear end of the delivery-tube of the injector, l provide it with a yoke, M, embracing said tube and 7 carrying the nut M', to which is adapted the screw of an operating-stem, N, the latter turnlng in a stuffing-box on the casing and having an arm, h, connected by a rod, h', to the valveoperatinglever, so that the overflow-valve will 8;; be moved simultaneously with the movement of the valve which governs the flow of steam, as in otheriujectors of this class.

The overiiow in my improved injector is wholly at the rear end of the deliverytube-a 8 5 feature which I have found of advantage in the working of the injector, and which simplifies and cheapens construction.

4In the water-passage P of the injector is a valve, S, the stem m of which passes through a 9o stuffing-box on vthe casing and has an arm, m', provided with a spring-pin, a, which may be adapted to any one of a series of openings, p, in a segmental plate, T, secured Yto the casing, so that the valve S may be adj ustedv to any position which the desired volume of supply may require, and may be secured in this position by the engagement of the spring-pilla with one of the openings in the segmental plate.

By the construct-ion above described I am Ico enabled to simplify the valve mechanism of the injector and reduce the number of parts composing the same as compared with the valve mechanism of other injectors of this class with which I am familiar, and by the use of the yoke connecting the overfiow-valve and its operating-nut I am permitted to locate said overtlow-valve forward of the rear end of the delivery-tube of the injector, so that I am enabled to arrange the steam-nozzles and combiningtubes in the same axial line without undulyincreasing the length of casing of the injector.

The steamAvalve may, if desired, consist of a simple ported cylinder without the rim Q,- but the use of the latter is preferred.

I claim as myinvention-e l. The combination, in au injector, of forward and rear steam-nozzles, a passage leading from one to the other, a ported tubular steamvalve, and a ported barrel to which said valve is adapted, whereby as the valve is withdrawn from said barrel the steam will be admitted successively to the rst and second nozzles, all substantially as specified.

2. The combination of the steam-nozzle ha'ving a ported tubular barrel with the steamvalve having a rim adapted toclose against a seat at the end of said barrel and a tubular projection constructed to close the ports ofthe barrel and having ports adjacent to the rim, all vsubstantially as specified.

3. The overiioW-valve having anoperatingnut, and a yoke supporting the latter, all substantially as specified.

4. The combination, in a double-tube injector, of the steam-nozzles, combining-tubes, and delivery-tubev with an overflow-valve located forward of the rear end of said deliverytube and having a yoke embracing said tube and carrying the operatingnut of the valve, all substantially as specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

J. R. GEHRNG.

Witnesses: l

VILLIAM D. CONNER, HARRY SMITH. 

